/*
 * Copyright 2011 Clean GWT
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.cleanform.gwt.chinesechess.server.comet;

import java.util.ArrayList;
import java.util.List;

import com.cleanform.gwt.chinesechess.shared.comet.UserEvent;

/**
 * The comet event pool for a client.
 * 
 * 
 * @author Jess
 * @version 1.0
 * @since 1.0
 */
public class CometEventPool {
	private List<UserEvent> events = new ArrayList<UserEvent>();

	public void addEvent(UserEvent event) {
		if (events == null) {
			events = new ArrayList<UserEvent>();
		}
		events.add(event);
	}

	public boolean hasEvents() {
		return events != null && events.size() > 0;
	}

	public List<UserEvent> pollEvents() {
		List<UserEvent> poll = events;
		events = null;
		return poll;
	}
}
